Seven years ago, DH had knee surgery that became grossly infected; he ended up spending 7 weeks in the hospital/nursing home, in January/February. We had a huge snow storm that dumped about 3.5' of snow, and that didn't measure the drifts. The snow at the foot of my front steps and in the walk was shoulder-high, and the drifts against the side of the SUV reached the roof. I was sure I was snowed in until May when I suddenly heard a snow blower, and a voice yelling, "Don't worry, we're coming!" Our next door neighbors, James and Emily, were there, him with the snow blower and her with a shovel. She and I managed to get access to the SUV and the front walk, while James did the driveway around the SUV and access to the street. I went to spend the night in the nursing home with DH and when I came home the next afternoon, James had been back. He finished the drive and un-earthed the Kia, shoveled off the back deck, and created a pathway to the oil tank pipe so I could get oil delivered. These folks went above and beyond when DH and I were in a bad way, and we've always been grateful.
Milos, on the other side of our house, often will mow our lawn. He has a riding tractor mower that he enjoys too much, and has "fun" mowing both his yard and ours!
When we lived in Michigan (the first summer, when we moved in) we hired a guy down the street to help DH with the yard work- clearing out gardens, planting stuff, etc. Turns out he and his wife were pretty desperate, and lost their apartment about 3 weeks before new housing became available. We let them and their 3 little kids stay with us for about a week until temporary shelter could be found for them. It felt like a big risk, because we didn't really know them, and with all the horror stories on the internet, well... you can guess what concerned us. However, we had a big-enough house with an empty bedroom and a study with sofa-bed, and I wasn't going to let them be turned out onto the street. I don't know whatever became of them, but I think they were with us for 8 or 9 nights. It was a very stressful time for DH and me, and with our own DD and then an additional 5 people it was taking its toll on our relationship, so I couldn't let them stay indefinitely. It wouldn't have been healthy for my family. I am glad that we could help them as much as we could, though, instead of them having to live in their car or go to a homeless shelter. They left us for a 2br suite (with kitchenette and living area), temporary housing until their new accommodations were available.